|
* * * * * C/2025 R2 (SWAN) * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2025 11 24.764 S 10.8 AQ 25.4J 72 3.5 0/ BOU Westerwijtwerd 2025 11 21.731 S 10.4 AQ 15.5L 50 2.6 2 DIJ Burlage 2025 11 17.91 S 9.5 TK 20.3T 77 7 2/ GON Cueto Rosales, León 2025 11 17.784 S 9.6 TA 25.4J 47 5.5 1 BOU Westerwijtwerd 2025 11 16.726 S 9.2 TK 15.5L 29 6 2 DIJ Burlage 2025 11 12.802 S 9.2 TK 15.5L 50 7 2/ DIJ Burlage 2025 11 10.08 S 8.8 TK 10.0B 20 5 2/ GOI Araçatuba 2025 11 9.770 S 8.5 TA 8.0B 15 7 2/ BOU Westerwijtwerd 2025 11 9.738 S 8.9 TK 8.0B 15 6 2/ DIJ Burlage 2025 11 2.41 S 8.1 TJ 40.0L 36 3 3 YOS Mt. Hanadate, Ibaraki (Hard to see due to the strong moonlight. But I could see the comet is large.) 2025 10 28.917 S 7.5 TK 8.0B 15 9 2/ DIJ Burlage 2025 10 27.76 S 6.6 TK 8.0B 15 &15 2 SCH Bussloo (Big round diffuse coma.) 2025 10 27.751 S 6.8 TK 8.0B 15 10 3/ BOU Westerwijtwerd (31% lit Moon 5° over southern horizon.) 2025 10 27.749 S 7.1 TK 8.0B 15 9 3/ DIJ Burlage (Moonlight.) 2025 10 26.87 S 6.2 TK 5.0B 10 13 3/ 0.3 80 GON Alto de la Camperona, León 2025 10 26.08 S 6.3 HD 10.0B 20 8 3/ GOI Araçatuba 2025 10 25.83 S 6.2 TK 5.6B 8 &13 3 SCH Bussloo (Big round diffuse coma.) 2025 10 25.750 S 6.2 TK 8.0B 15 11 4/ DIJ Burlage 2025 10 24.756 S 6.2 YG 8.0B 15 10 4 BOU Westerwijtwerd 2025 10 24.43 B 6.0 AA 5.0B 10 SEA Cowra, NSW 2025 10 23.98 S 6.0 HD 5.0B 7 12 4/ 2.0 70 GOI Araçatuba 2025 10 23.44 S 5.6 AA 5.0B 10 SEA Cowra, NSW 2025 10 22.77 S 5.8 TK 8.0B 15 &12 3 SCH Eerbeek (Weak big smudge. Altitude 26°.) 2025 10 21.96 S 6.0 HD 5.0B 7 12 4 GOI Araçatuba 2025 10 20.96 M 5.9 HD 5.0B 7 12 5 1.0 90 GOI Araçatuba 2025 10 20.760 S 6.1 TK 8.0B 15 13 5 DIJ Burlage 2025 10 19.96 S 6.0 HD 5.0B 7 10 4 GOI Araçatuba 2025 10 19.769 S 6.5 TK 8.0B 15 11 5 DIJ Burlage 2025 10 18.43 B 5.8 AA 5.0B 10 SEA Cowra, NSW 2025 10 17.42 B 5.6 AA 5.0B 10 SEA Cowra, NSW 2025 10 16.753 S 5.9 TK 8.0B 15 12 4/ DIJ Burlage 2025 10 16.44 I 5.6 AA 2.0B 2.5 SEA Cowra, NSW 2025 10 15.97 S 6.0 HD 5.0B 7 10 4 GOI Araçatuba 2025 10 15.81 S 5.8 TK 5.0B 10 12 4/ GON Gamoniteiro - Sierra del Aramo, Asturias (Altitude 18°.) 2025 10 15.770 S 5.9 TK 8.0B 15 11 5/ DIJ Burlage (Altitude comet 10.8°.) 2025 10 15.45 B 5.7 AA 5.0B 10 SEA Cowra, NSW (Glimpsed with naked eye.) 2025 10 15.40 M 5.8 TK 5.0R 10 12 5 WYA Walcha, NSW (Close to bright star. Opaque centre, transparent outer coma.) 2025 10 14.45 B 5.9 AA 5.0B 10 SEA Cowra, NSW 2025 10 14.41 M 5.7 TK 5.0R 10 12 5/ WYA Walcha, NSW (Coma diffuse, bright centre. Hint of a short tail to the East approximately.) 2025 10 13.77 sS 6.0 TK 8.0B 15 &10 2 SCH Eerbeek (Weak big smudge. Altitude 9.5 deg. Altitude Sun -16 deg.) 2025 10 13.44 B 5.6 AA 5.0B 10 SEA Cowra, NSW 2025 10 13.39 M 6.0 TK 5.0R 10 15 5/ WYA Walcha, NSW (Coma diffuse. Hint of a short tail to the East approximately.) 2025 10 11.43 B 5.9 AA 5.0B 10 SEA Cowra, NSW 2025 10 11.39 M 6.1 TK 5.0B 10 13 5 WYA Walcha, NSW (Coma diffuse, gradually brightening to centre, no obvious tail visible. 2025 10 10.81 S 5.9 TK 5.0B 10 12 4/ GON Alto del Trichero, León (Altitude 9°.) 2025 10 10.42 B 6.1 AA 10.0B 25 12 1 100 SEA Cowra, NSW (Large, diffuse and faint outer coma.) 2025 10 9.42 B 5.9 AA 5.0B 10 SEA Cowra, NSW 2025 10 5.94 M 6.2 TK 10.0B 20 5 5 GOI Araçatuba (Moonlight.) 2025 9 26.94 M 6.2 HD 10.0B 20 4 7 0.5 115 GOI Araçatuba (Moonlight. Comet altitude 16°.) 2025 9 24.94 S 6.7 HD 5.0B 7 4 5 GOI Araçatuba (Moonlight. Comet altitude 15°.) 2025 9 23.95 M 6.8 HD 5.0B 7 4 5 GOI Araçatuba (Comet altitude 12°.) 2025 9 23.39 M 6.6 TK 5.0B 10 4.5 6/ 1.0 109 WYA Walcha, NSW (Faint tail. Altitude 8.9°. Slight interference from zodiacal light.) 2025 9 22.41 B 6.8 AA 10.0B 25 SEA Cowra, NSW 2025 9 22.38 M 6.6 TK 7.0B 15 4.5 6 0.9 108 WYA Walcha, NSW (Faint tail. Altitude 9.8°. Slight interference from zodiacal light.) 2025 9 21.37 M 6.6 TK 7.0B 15 4.0 6 46m 112 WYA Walcha, NSW (Faint tail. Altitude 15.0°. Slight interference from zodiacal light. Coma centre aqua-blue in colour.) 2025 9 18.40 S 6.7 AA 10.0B 25 SEA Cowra, NSW 2025 9 17.41 S 6.8 AA 10.0B 25 SEA Cowra, NSW 2025 9 17.38 M 6.9 TK 7.0B 15 3.0 6/ 23m 109 WYA Walcha, NSW (Faint tail. Altitude 12.4°. Slight interference from zodiacal light.) 2025 9 16.37 M 6.9 TK 7.0B 15 3.3 7 0.55 115 WYA Walcha, NSW (Faint tail. Altitude 12.3°. Slight interference from zodiacal light.) 2025 9 15.40 B 6.8:AA 10.0B 25 SEA Cowra, NSW 2025 9 15.38 M 6.8 TK 5.0B 10 1.5 7 0.5 118 WYA Walcha, NSW (Faint tail. Enhances strongly in Swan Band filter.) 2025 9 14.94 M 7.1 HD 10.0B 20 2 6/ 0.2 120 GOI Araçatuba (Comet altitude 13°.) 2025 9 14.39 B 6.7 AA 10.0B 25 1.0 100 SEA Cowra, NSW 2025 9 13.94 M 6.9 HD 10.0B 20 2 7/ 0.25 120 GOI Araçatuba (Comet altitude 12°.) 2025 9 13.38 B 6.1 AA 10.0B 25 SEA Cowra, NSW (Somewhat enhanced through Swan Band filter.)